package friendsearch;

import java.io.IOException;

import javax.servlet.RequestDispatcher;
import javax.servlet.ServletException;
import javax.servlet.http.HttpServlet;
import javax.servlet.http.HttpServletRequest;
import javax.servlet.http.HttpServletResponse;

public class Calculate extends HttpServlet {

	/**
	 * Constructor of the object.
	 */
	public Calculate() {
		super();
	}

	/**
	 * Destruction of the servlet. <br>
	 */
	public void destroy() {
		super.destroy(); // Just puts "destroy" string in log
		// Put your code here
	}

	/**
	 * The doGet method of the servlet. <br>
	 *
	 * This method is called when a form has its tag value method equals to get.
	 * 
	 * @param request the request send by the client to the server
	 * @param response the response send by the server to the client
	 * @throws ServletException if an error occurred
	 * @throws IOException if an error occurred
	 */
	public void doGet(HttpServletRequest request, HttpServletResponse response)
			throws ServletException, IOException {
		doPost(request, response);
	}

	/**
	 * The doPost method of the servlet. <br>
	 *
	 * This method is called when a form has its tag value method equals to post.
	 * 
	 * @param request the request send by the client to the server
	 * @param response the response send by the server to the client
	 * @throws ServletException if an error occurred
	 * @throws IOException if an error occurred
	 */
	public void doPost(HttpServletRequest request, HttpServletResponse response)
			throws ServletException, IOException {

		double plo1=Double.parseDouble(request.getParameter("plo1"));
		double pla1=Double.parseDouble(request.getParameter("pla1"));
		
		double plo2=Double.parseDouble(request.getParameter("plo2"));
		double pla2=Double.parseDouble(request.getParameter("pla2"));
		
		Coordinate p=new Coordinate(plo1,pla1);
		Coordinate q=new Coordinate(plo2,pla2);
		
		double distance=GlobalDistance.distance(p,q);
		
		request.setAttribute("p1",p);
		request.setAttribute("p2",q);
		request.setAttribute("distance",distance);
		RequestDispatcher rd = getServletContext().getRequestDispatcher("/index.jsp");
		rd.forward(request, response);

		
	}

	/**
	 * Initialization of the servlet. <br>
	 *
	 * @throws ServletException if an error occurs
	 */
	public void init() throws ServletException {
		// Put your code here
	}

}
